Car-wheel.



No. 629,969. Patented Aug. I, 1899.

E. J. SNOW.

GAB WHEEL. {Application filed June 10, 1898 2 Sheets-Sheet I.

(No Ilodei.)

. Patented Aug. I, i399.

8441mm a k UNITED STATES- PATENT OFFICE.

ELMER J. SNO WV,

or HILLBURN, new YORK, ASSIGNOR or ONE-HALF 'r'o WILLIAM w. snow, orSAME PLACE.

CAR-WHEEL;

SPECIFICATION forming part of Letters Patent No. 629,969, dated Au ust1, 1899. Application filed June 10, 1898. sienna. 683,091. 1N0 man.)

center portions the steel tires necessary to be.

applied. The use of wrought-metal centers, however, is objectionable,inasmuch as owing to the flexibility of the center at the hub when thecenter is pressed onto the axle at a pressure sufiicient to hold thewheel firmly in po- 7 sition the rigidity of the metal is overcome,

the hub stretches, and the wheel is liable to become finally loose uponthe axle. A castmetal center has many advantages over one of wroughtmetal. Among others, it is not liable'to stretch,'as aforesaid, and therigidity of the metal insures the retention of the wheel upon the axle.As ordinarily constructed, however, it is difficult to secure the steelrim to the cast-metal center, as the center cannot be bent to lock therim in place, nor has it the strength to afford a secure hold if the rimis bent to lock with the center; and the object of my invention is toovercome this objection, and to this end I construct the parts so thatthe rim can be bent and securely locked to a part of the center havingsufficient strength to resist the locking-pressure and afiord a securehold, as fully set forth hereinafter and as illustrated in theaccompanying drawings, in Which- Figure 1 is a transverse sectionalelevation of a car-wheel having my improvement; Fig. 2, a viewillustrating the position of the parts prior to locking the rims ortires to the wheelbody; and Fig. 3, a face view of the center portion,illustrating a modification.

The center or bodyA of the wheel is of cast metal of any usual orsuitable form, and the rim or tire B is of steel, with an annular flangeat the outer side bearing against the outer face of the rim of thecenter A and with the usual flange fadjacent to the tread at the innerside of the tire. The meeting faces of the center and the tire may beslightly beveled; but, as shown, they are parallel to the axis ofthewheel.

In order to securely retain the tire upon the wheel and at the same timepermit its removal, if necessary, I fasten or secure in the body orcenter A of the wheel a retainer or lookingpiece 01, which, as shown inFigs. 1 and 2, is a ring of wrought or other malleable metal capable ofresisting without breaking the pressure bought against it and dovetailedor thickened toward the inner end, so that when the center A is castupon the same a portion of the retainer (I will project beyond the outerface of the center near the rim, and in this projecting portion there isa'groove or recess a: and beyond the latter a lip e, extending inward..

In the manufacture of the tire B the outer flange av is of suchdimensions that the tire can be applied to the center A with the innerface of the flange a bearing against the outer edge of the retainer d,as shown in Fig. 2, and in the inner edge of the flange a a groove iscut whose sides are parallel to each other and to the axis of the wheel,so as to admit of the reception of the retainer portion of the centerwhen the wheel is assembled. After the tire B has been put intoposition, as indicated in Fig. 1, the lip or flange Z7 is forced outwardby pressure by means of a roller or otherwise, so that the lip orflange?) is forced in the recess as of the retainer d, extending thusback of the lip e of the said retainer, as shown in Fig. 1, wherebythere is such an engagement of the parts that the tire B cannot beforced outward by any pressure which may be applied to the same, theretainer holding the tire in place, while the strains which tend tothrust the tire inward are resisted by the contact of the flange a withthe rim of the center A.

It will be seen thatthe retainer 61 hasapositive bearing against theinner face of the flange o so that when the flange or lip b is forcedoutward against the retainer the latter has a strong unyielding supportthat will permit the lip to be forced down firmly into engagement withthe projecting portion of the retainer to secure a positive locking ofthe parts together. It will also be evident that should there be anyirregularities in the opposing hearin g-surfaces of the retainer (1 andthe flange a or' any other cause which would result in subjecting theretainer to unequal strains during the process of forcing the lip Z)into the groove :1: the retainer 01 will on account of its malleabilitybe enabled to yield slightly or otherwise accommodate itself towithstand such strains without breaking and possesses the requisitestrength for this purpose.

When it becomes necessary to re-tire the wheel, it is only necessary tosever the lip or flange b beyond the lip e or sever that portion of theflange forward of the retainer, when the tire can at once he forced offthe wheel, leaving the center intact and ready for the application of anew tire.

The retaining device may be of any suitable malleable material andconstruction, provided it affords a bearing against which to bend thelip b.0f the tire, so as to prevent the latter from being thrust outwardby any thrusts which come upon the flangef in coming in contact withfrogs, switches, or guardrails.

lVhile I have referred to the retainer d as being in the form of a ring,it may be in sections arranged at intervals upon the body or structionand arrangement of parts shown, I claim as my invention 1. A car-wheelhaving a cast-metal center and a retainerdof malleable metal connectedtherewith, and a tire provided with a lip bent to engage the retainer,substantially as set forth.

2. The combination in a car-wheel, of the cast-metal center A, aretainer of malleable metal projecting from the outer face of the centerand provided with a lip e, and a tire provided with a deep flange abearing against the outer face of the center and with a lip b bent toengage the lip e, substantially as set forth.

3. The combination with the cast-metal cen-* ter of a car-Wheel, of aretainer of malleable metal having an enlarged portion embedded in thecenter, and a portion provided with a lip projecting beyond the outerface of the center, substantially as set forth.

4. A car-wheel having a cast-metal center portion, a retainer ofmalleable metal cast therein, and a steel tire having a portioninterlocked with the retainer, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ELMER J. SNOWV.

WVitnesses:

G. W. CoNKLIN, J OHN F. REGAN.

